Patents Examined by Bryan Tung
  • Patent number: 6226327
    Abstract: An encoder considers a frame representing a picture as comprised of areas. For each area, the encoder decides which of frame-based or field-based orthogonal transformation will be most efficient at reducing spatial redundancy in that area. For each area, the encoder decides which of frame-based or field-based predictive encoding will be most efficient at reducing temporal redundancy in that area. The encoder encodes each area of the picture frame using the most efficient orthogonal transformation technique and using the most efficient predictive encoding technique to produce an encoded signal. A decoder decodes the encoded signal. The encoded signal is recorded on a recording medium, transmitted over a transmission channel, or broadcast.
    Type: Grant
    Filed: June 29, 1993
    Date of Patent: May 1, 2001
    Assignee: Sony Corporation
    Inventors: Katsuji Igarashi, Jun Yonemitsu, Yoichi Yagasaki, Yasushi Fujinami, Tomoyuki Sato, Motoki Kato, Teruhiko Suzuki
  • Patent number: 6188436
    Abstract: An apparatus for temporally shifting video data within a video signal is provided with a video data source for providing a video signal and a signal splitter for generating a first video data stream and a second video data stream, the first video data stream comprising video data in excess of a threshold. The apparatus includes means for temporally shifting the excess video data in the first video data stream relative to the second video data stream and means for recombining the first video data stream with the second video data stream after the first video data stream has been temporally shifted relative to the second video data stream. The means for temporally shifting the excess video data in the first video data stream relative to the second video data stream may include a first delay buffer for delaying the first video data stream by an adjustable time period and a second delay buffer for delaying the second video data stream by a fixed time period.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: February 13, 2001
    Assignee: Hughes Electronics Corporation
    Inventors: Jim C. Williams, Robert H. Plummer
  • Patent number: 6184923
    Abstract: An endoscope apparatus of the present invention comprises an endoscope with a built-in solid state imaging device at a distal end portion of an insertion tube and a distal end optical adapter detachably connected to the distal end portion of the insertion tube of the endoscope. At least one objective optical system is provided in said distal end optical adapter and an optical image formed on said solid state imaging device through the distal end optical adapter is displayed on a TV monitor through a control device.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: February 6, 2001
    Assignee: Olympus Optical Co., Ltd.
    Inventor: Atsushi Miyazaki
  • Patent number: 6166761
    Abstract: A method and apparatus for monitoring biological samples. The apparatus comprises an incubator within which are mounted at least two CCD mini-cameras adapted for photomicroscopy as mini-photomicroscopes. The apparatus may be configured for time-lapse photomicroscopy, transmission photomicroscopy, reflection photomicroscopy, epifluorescence photomicroscopy, or infrared photomicroscopy. 3D images are acquired by focusing the mini-photomicroscopes on successive focal image planes in the biological samples. The mini-photomicroscopes may be focused on separate samples, on different portions of the same sample, or on the same portion of the same sample.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: December 26, 2000
    Assignee: Interface Multigrad Technology
    Inventor: Amir Arav
  • Patent number: 6160579
    Abstract: In converting image sensing data into image data, a plurality of image sensing data meeting a predetermined condition are processed as a group of image sensing data. An image reproduction parameter is obtained from this image sensing data group, and each image sensing data of the image sensing data group is converted into image data by using the image reproduction parameter. Accordingly, an image reproduction parameter for obtaining an optimum reproduced image can be accurately set from the image sensing data group. Also, since a reproduction luminance level (range) is determined from the image sensing data group, the correlation between the luminances of image planes is not lost. This allows an easy comparison of reproduced images and prevents the boundaries of luminances from becoming unnatural when the reproduced images are synthesized.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: December 12, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinobu Shiraiwa, Yoshiro Udagawa, Kenji Takahashi, Eiichiro Ikeda, Yumiko Hidaka
  • Patent number: 6160849
    Abstract: An encoder considers a frame representing a picture as comprised of areas. For each area, the encoder decides which of frame-based or field-based orthogonal transformation will be most efficient at reducing spatial redundancy in that area. For each area, the encoder decides which of frame-based or field-based predictive encoding will be most efficient at reducing temporal redundancy in that area. The encoder encodes each area of the picture frame using the most efficient orthogonal transformation technique and using the most efficient predictive encoding technique to produce an encoded signal. A decoder decodes the encoded signal. The encoded signal is recorded on a recording medium, transmitted over a transmission channel, or broadcast.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: December 12, 2000
    Assignee: Sony Corporation
    Inventors: Katsuji Igarashi, Jun Yonemitsu, Yoichi Yagasaki, Yasushi Fujinami, Tomoyuki Sato, Motoki Kato, Teruhiko Suzuki
  • Patent number: 6154494
    Abstract: Among a first and second video data each being variable length coded data such that an occupancy of a decoder buffer is neither overflown nor underflown, having an end code at a rear end thereof and being comprised of a plurality of compressed portion data, a value related to a buffer occupancy at a decoding timing of the last picture of the first video data is compared by an invalid data amount calculator 13 with the buffer occupancy at the decoding timing of the first picture of the second video data. According to a data amount corresponding to a difference between the occupancies when the result of comparison is a predetermined one, the invalid data of this data amount is added by an invalid data adder 14 to the last picture of the first video data and the second video data is connected by a video data connector 15 to the first video data.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: November 28, 2000
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Takayuki Sugahara, Junzo Suzuki, Harukuni Kobari
  • Patent number: 6154250
    Abstract: A system for enhancing the television presentation of an object at a sporting event includes one or more sensors which are used to determine the location of the object. Based on the location of the object and the field of view of a broadcast camera, a processor determines the position of the object in a video frame of the broadcast camera. Once knowing where the object is positioned within the video frame, the television signal can be edited or augmented to enhance the presentation of the object.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: November 28, 2000
    Assignee: Fox Sports Productions, Inc.
    Inventors: Stanley K. Honey, Richard H. Cavallaro, David Blyth Hill, Andrew G. Setos, Jerry Neil Gepner, Timothy Paul Heidmann, Patrick Wade Olsen, Fred Judson Heinzmann, Alan C. Phillips, Harold Guthart, Alan Alexander Burns, Charles Lawrence Rino, Philip Calvin Evans
  • Patent number: 6148026
    Abstract: A method and apparatus for coding video data permits coding of video information with optional, enhanced functionalities. Video data is coded as base layer data and enhancement layer data. The base layer data includes convention motion compensated transform encoded texture and motion vector data. Optional enhancement layer data contains mesh node vector data. Mesh node vector data of the enhancement layer may be predicted based on motion vectors of the base layer. Thus, simple decoders may decode the base layer data and obtain a basic representation of the coded video data. However, more powerful decoders may decode both the base layer and enhanced layer to obtain decoded video permitting functionalities. An embodiment of the present invention provides a back channel that permits a decoder to affect how mesh node coding is performed in the encoder. The decoder may command the encoder to reduce or eliminate encoding of mesh node motion vectors.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: November 14, 2000
    Assignees: AT&T Corp., Sharp Laboratories
    Inventors: Atul Puri, A. Murat Tekalp, Petrus J. L. van Beek
  • Patent number: 6141381
    Abstract: In a video motion compensation encoding apparatus in which each of periodically selected pictures is encoded as successive blocks of picture elements, by encoding of the prediction error amounts obtained for each block in conjunction with variable-length encoding by a motion vector encoder of motion vectors which are utilized in motion compensation processing to derive the prediction error amounts, each of these motion vectors is selected by a comparator-controlled switch either as an estimated motion vector derived by a conventional type of motion estimation section or as a predicted motion vector derived by a motion vector prediction section based on previously encoded motion vectors, with the estimated motion vector being selected only if it is found that an amount of prediction error which would occur from using the predicted motion vector is significantly greater than that which would result from using the estimated motion vector.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: October 31, 2000
    Assignee: Victor Company of Japan, Ltd.
    Inventor: Kenji Sugiyama
  • Patent number: 6137837
    Abstract: A method and apparatus for efficient motion estimation of a digital video image wherein memory capacity and processing requirements are reduced by 50% or more, and image quality is maintained. Only a portion of the pixel data of a search window is used to perform motion estimation. Specifically, a portion of the pixel data of a previous image is retrieved and stored in a memory according to a search window pattern such as a fixed checkerboard pattern. Pixel data from the current image is alternated between first and second inverse checkerboard patterns for successive comparison regions of the search window. The scheme is compatible with frame or field mode video sequences.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: October 24, 2000
    Assignees: Motorola, Inc., General Instrument Corporation
    Inventors: Robert Nemiroff, Vicky B. Kaku
  • Patent number: 6137836
    Abstract: A method of transmitting pictorial data provides for reduction of required transmission bandwidth by constructing the pictorial data in the form of a composite image of primitive pictures. Each of the primitive pictures has a simple geometric form such as a line, a circle, a triangle, and a quadrilateral. Each of these primitive pictures is identified by a parameter, which may take the form of an alphanumeric character. Coordinates of a center of a circle, and of end points of a line, and of vertices of a polygon are identified by pairs of parameters giving the X and the Y coordinates of a two-dimensional display of the image. If desired, the image can be constructed as a perspective view of a three-dimensional object, in which case tetrahedrons, spheres, and hexahedrons may be employed. The parameters are converted to digital signals which are transmitted via a communication link to a display for the regeneration of the original image.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: October 24, 2000
    Assignee: Nokia Mobile Phones Limited
    Inventor: Tero Haataja
  • Patent number: 6134271
    Abstract: A method and apparatus for coding, decoding. The method and apparatus includes calculation of motion vectors of vertices of a patch in an image being encoded and outputting information of motion vectors of vertices and information that specifies the values of horizontal and vertical components of motion vector for each pixel in the patch which are an integer multiple of 1/d of the distance between adjacent pixels, wherein d is an integer not less than 2.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: October 17, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Yuichiro Nakaya, Junichi Kimura
  • Patent number: 6128345
    Abstract: An adaptive blocking coding system selects an effective blocking of an input image signal to be encoded in accordance with the correlation between fields, even if motion is detected between the fields. The blocking patterns include an individual field blocking, a non-interlace blocking, a split blocking and an inverted split blocking. Further, the coding system searches for motion from both odd and even fields of a frame for producing a motion compensated preduction signal in order to provide high-efficient coding.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: October 3, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tokumichi Murakami, Kohtaro Asai, Hirofumi Nishikawa, Yoshihisa Yamada
  • Patent number: 6128343
    Abstract: An apparatus and a method for converting a video signal in the scanning line order.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: October 3, 2000
    Assignee: Hyundai Electronics Industries Co., Ltd.
    Inventor: Byung Joo Kang
  • Patent number: 6128339
    Abstract: An apparatus and method for masking video data errors by detecting direct current errors of a block unit during the decoding of video data. A video frame is composed of a plurality of macro blocks formed of a plurality of blocks, each having a predetermined size and a direct current (DC) value. The apparatus masks errors during the decoding of compressed video data, and includes a first frame storing portion for storing video data of a previous frame, and a second frame storing portion for storing video data of a present frame. An error detector calculates a direct current value difference between the respective blocks in the decoded video data and detects a specific macro block error, when the difference value is greater than a reference threshold. A DC error detector copies the data of the same position stored in the first frame storing portion in the position in which the error of the second frame storing portion is generated, when errors are detected in the error detector.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: October 3, 2000
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Dong-seek Park
  • Patent number: 6118476
    Abstract: A CCD microscope includes: two polarized light illumination systems for irradiating polarized lights having vibrating directions in perpendicular to each other selectively to an object to be observed, and an analyser disposed on an optical path from the object to a CCD device for picking-up an image of the object, the analyser having a vibrating direction in parallel with the vibrating direction of the polarized light from one polarized light illumination system, and in perpendicular to the vibrating direction of the polarized light from the other polarized light illumination system. The surface state of the object is picked-up by a polarized light of one polarized light illumination system that is kept unchanged for the polarized state upon reflection on the surface, while the inner state of the object is picked-up by a polarized light of the other polarized light illumination system that is changed for the polarized state.
    Type: Grant
    Filed: July 10, 1998
    Date of Patent: September 12, 2000
    Assignee: Moritex Corporation
    Inventors: Yuhkoh Morito, Junichi Arai, Kouichi Watanabe
  • Patent number: 6115060
    Abstract: The instant invention is a video camera assembly which is adapted to be mounted in a thru-hull fitting so as to allow for safe and dependable viewing in various environments. A primary embodiment of the invention allows for directing the focus of the camera toward alternative fields of view by incorporation of the device within a conventional thru-hull fitting found on most boats. The camera includes a modified transducer body with a self-contained miniaturized camera available for coupling to a television or video monitor in a safe and protected location.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: September 5, 2000
    Inventor: Steven R. Rowley
  • Patent number: 6111599
    Abstract: An apparatus is provided for observing a hostile environment, comprising a housing and a camera capable of insertion within the housing. The housing is a double wall assembly with an inner and outer wall with an hermetically sealed chamber therebetween. A housing for an optical system used to observe a hostile environment is provided, comprising a transparent, double wall assembly. The double wall assembly has an inner wall and an outer wall with an hermetically sealed chamber therebetween. The double wall assembly has an opening and a void area in communication with the opening. The void area of the housing is adapted to accommodate the optical system within said void area. An apparatus for protecting an optical system used to observe a hostile environment is provided comprising a housing; a tube positioned within the housing; and a base for supporting the housing and the tube. The housing comprises a double wall assembly having an inner wall and an outerwall with an hermetically sealed chamber therebetween.
    Type: Grant
    Filed: January 14, 1998
    Date of Patent: August 29, 2000
    Assignee: Westinghouse Savannah River Company
    Inventors: Thomas A. Nance, Micah L. Boylston, Casandra W. Robinson, William C. Sexton, Frank M. Heckendorn
  • Patent number: 6111917
    Abstract: A video transmission system and method is provided, by which if the arrival of a signal sent from the video receiving side to the sending side is delayed, or if an error is generated in a signal for communicating a receiving error, it is possible to prevent a situation such that no effective reference picture exists in a (picture) memory. In the present method, storing of encoded data into a memory section is controlled based on information indicated by a signal received from the video receiving side, and the control includes determination whether new data are stored, determination of an area for storing data in the memory section, and deletion of data stored in the memory section.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: August 29, 2000
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yasuhiro Tomita, Tsukasa Kimura, Hideaki Kimata, Ryota Suzuki, Takaaki Akimoto, Tadashi Ichikawa